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Electrical and structural characteristics of lanthanum-doped barium titanate ceramics
Abstract
Single phase La-doped BaTiO3 with the formula Ba1−xLaxTi1−x/4O3: 0⩽x⩽0.20 was prepared by solid state reaction of oxide mixtures at 1350 °C, 3 days, in O2. The tetragonal distortion in undoped BaTiO3 decreased with x and samples were cubic for x⩾0.05. Both the tetragonal/cubic and orthorhombic/tetragonal transition temperatures decreased with x, but at different rates, and appeared to coalesce at x∼0.08. The value of the permittivity maximum at the tetragonal/cubic phase transition in ceramic samples increased from ∼10 000 for x=0 at 130 °C to ∼25 000 for x=0.06 at ∼−9 °C. At larger x, the permittivity maximum broadened, showed “relaxor”-type frequency dependent permittivity characteristics and continued to move to lower temperatures. Samples fired in O2 were insulating and showed no signs of donor doping whereas air-fired samples were semiconducting, attributable to oxygen loss.
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Shannon, R. D. (1976) · Acta Crystallographica Section A · doi:10.1107/s0567739476001551 · Cited by 66,145
Principles and Applications of Ferroelectrics and Related Materials
Lines, M. E., & Glass, A. M. (2001) · Oxford University Press eBooks · doi:10.1093/acprof:oso/9780198507789.001.0001 · Cited by 5,257
Diffuse Ferroelectric Phase Transitions in Ba(Ti 1 ‐ y Zr y )O 3 Ceramics
HENNINGS, D., SCHNELL, A., & SIMON, G. (1982) · Journal of the American Ceramic Society · doi:10.1111/j.1151-2916.1982.tb10778.x · Cited by 626
Frey, M. H., Xu, Z., Han, P., & Payne, D. A. (1998) · Ferroelectrics · doi:10.1080/00150199808009168 · Cited by 389
Samara, G. A. (1966) · Physical Review · doi:10.1103/physrev.151.378 · Cited by 378
Cited by
Defects and Aliovalent Doping Engineering in Electroceramics
Feng, Y., Wu, J., Chi, Q., Li, W., Yu, Y., & Fei, W. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00507 · Cited by 353
Metadata
- Authors
- Morrison, F. D., Sinclair, D. C., & West, A. R.
- Venue
- Journal of Applied Physics
- Publisher
- AIP Publishing
- Published
- 1999-12-01
- Volume
- 86
- Issue
- 11
- Pages
- 6355-6366
- ISSN
- 0021-8979 (ISSN-L)
- 1089-7550
- OpenAlex
- W2084606671
- Cited by
- 366
- References
- 5
- FWCI
- 2.86
- Type
- journal article
- Language
- en
- Open access
- closed
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- Morrison, F. D., Sinclair, D. C., & West, A. R. (1999). Electrical and structural characteristics of lanthanum-doped barium titanate ceramics. Journal of Applied Physics. https://doi.org/10.1063/1.371698
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